Hello there @Knorth26, welcome to the forum, fellow survivor of Myeloproliferative neoplasms ('MPN'). Sounds like you’ve been doing well since diagnosis, keeping active, eating well and sleeping okay. After my own diagnosis with Polycythaemia vera ('PV') my specialists encouraged these too and they keep me healthy.
I see dear @Nichola75 has shared some great threads relating to Essential thrombocythemia ('ET'). Sadly, cancer-related fatigue is such a common symptom and side effect of Myeloproliferative neoplasms ('MPN') like ours and their treatments that it has its own acronym of CRF. After my diagnosis I started taking daily hydroxyurea which caused pretty disabling fatigue, really getting me down. I’d previously been active and healthy so I tried to read up on what might help.
Although I’m not a doctor, an analysis of cancer research I read early on showed that some rather counterintuitive things offset fatigue, namely keeping active. This seemed back to front to me, but anecdotally it does help me. Slow exercise like yoga, tai chi, Pilates and qigong are shown to improve energy levels in people living with cancer.
Personally, I took up yoga again which kept me flexible and helped slow down anxious thinking too with its focus on breathing. My former hiking became urban strolls, until energy levels built back up again. I’ve even been kayaking a few times which gives my legs a break but still gets me out into the wild. So my tip is to keep active in whatever ways you enjoy, and be careful in the sun!
I’d second @GenesisDevice in suggesting naps! I love a catnap when I’ve reached that wall of fatigue you may also know. Even resting without falling asleep can really help get me through to bedtime.
I’d say it’s always wise to pass any change or difference in symptoms by our specialists. From my non-medical understanding, these Myeloproliferative neoplasms ('MPN') can affect how much oxygen is in our blood which can affect energy levels. Fatigue can also be a sign of other illnesses affecting us, so maybe let your specialist know.
As you mentioned you’re going to create a diary, perhaps these apps might be of interest that were recommended by dear Nurse @Heidi_BloodCancerUK. Here’s the MPN Voice app and an MPN tracker.
Do please keep us posted about how you get on @Knorth26!